Allego il log della scansione combofix... ho beccato uno di quei ransom che ti criptano i file... Grazie mille a chiunque vorrà aiutarmi.

ComboFix 16-02-05.01 - Fausta-Ermanno 07/02/2016 12:43:19.3.2 - x64
Microsoft Windows 7 Ultimate 6.1.7600.0.1252.39.1040.18.1013.115 [GMT 1:00]
Eseguito da: c:\users\Fausta-Ermanno\Desktop\ComboFix.exe
AV: avast! Antivirus *Disabled/Updated* {C37D8F93-0602-E43C-40AA-47DAD597F308}
SP: avast! Antivirus *Disabled/Updated* {781C6E77-2038-EBB2-7A1A-7CA8AE10B9B5}
SP: Windows Defender *Enabled/Updated* {D68DDC3A-831F-4fae-9E44-DA132C1ACF46}
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((((((((((((((((((((((((( Files Creati Da 2016-01-07 al 2016-02-07 )))))))))))))))))))))))))))))))))))
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2016-02-07 11:48 . 2016-02-07 11:48 -------- d-----w- c:\users\Default\AppData\Local\temp
2016-02-07 11:10 . 2016-02-07 11:10 75888 ----a-w- c:\programdata\Microsoft\Windows Defender\Definition Updates\{6DEA96E1-68DF-4673-AC89-17C3941E4114}\offreg.2176.dll
2016-02-06 21:43 . 2015-12-16 09:15 11154520 ----a-w- c:\programdata\Microsoft\Windows Defender\Definition Updates\{6DEA96E1-68DF-4673-AC89-17C3941E4114}\mpengine.dll
2016-02-06 21:42 . 2015-12-02 12:18 301728 ------w- c:\windows\system32\MpSigStub.exe
2016-02-06 20:32 . 2016-02-06 20:32 -------- d-----w- c:\program files\Common Files\AV
2016-02-06 20:32 . 2016-02-06 20:32 -------- d-----w- c:\program files (x86)\Common Files\AV
2016-02-06 20:29 . 2016-02-06 20:29 -------- d-----w- c:\users\Fausta-Ermanno\AppData\Roaming\AVAST Software
2016-02-06 20:04 . 2016-02-07 11:35 136408 ----a-w- c:\windows\system32\drivers\MBAMSwissArmy.sys
2016-02-06 19:46 . 2016-02-06 19:46 -------- d-----w- c:\program files\AVAST Software
2016-02-06 19:42 . 2016-02-06 19:46 -------- d-----w- c:\programdata\AVAST Software
2016-01-09 15:52 . 2016-02-06 20:47 -------- d-----w- c:\users\Fausta-Ermanno\AppData\Roaming\OpenOffice.org
2016-01-08 16:40 . 2016-02-05 20:01 -------- d-----w- c:\users\Fausta-Ermanno\AppData\Local\Adobe
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(((((((((((((((((((((((((((((((((((((((( Find3M Report )))))))))))))))))))))))))))))))))))))))))))))))))) )
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((((((((((((((((((((((((((((((((((((( Punti Reg Caricati ))))))))))))))))))))))))))))))))))))))))))))))))))
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*Nota* i valori vuoti & legittimi/default non sono visualizzati.
REGEDIT4
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[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\ Windows\CurrentVersion\Run]
"avast5"="c:\program files\Alwil Software\Avast5\avastUI.exe" [2010-06-28 2837864]
"Adobe Reader Speed Launcher"="c:\program files (x86)\Adobe\Reader 9.0\Reader\Reader_sl.exe" [2009-12-22 35760]
"Adobe ARM"="c:\program files (x86)\Common Files\Adobe\ARM\1.0\AdobeARM.exe" [2009-12-11 948672]
"GrooveMonitor"="c:\program files (x86)\Microsoft Office\Office12\GrooveMonitor.exe" [2006-10-26 31016]
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c:\users\Fausta-Ermanno\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\
HELP_RECOVER_instructions+nbl.html [2016-2-4 7840]
HELP_RECOVER_instructions+nbl.png [2016-2-4 87303]
HELP_RECOVER_instructions+nbl.txt [2016-2-4 2089]
help_recover_instructions+vqf.html [2016-1-31 7542]
help_recover_instructions+vqf.txt [2016-1-31 2103]
help_recover_instructions+vry.html [2016-1-31 7542]
help_recover_instructions+vry.txt [2016-1-31 2103]
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[HKEY_LOCAL_MACHINE\software\microsoft\windows\curr entversion\policies\system]
"ConsentPromptBehaviorAdmin"= 5 (0x5)
"ConsentPromptBehaviorUser"= 3 (0x3)
"EnableUIADesktopToggle"= 0 (0x0)
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S1 aswSP;aswSP; [x]
S2 aswFsBlk;aswFsBlk; [x]
S2 aswMonFlt;aswMonFlt;c:\windows\system32\drivers\as wMonFlt.sys;c:\windows\SYSNATIVE\drivers\aswMonFlt .sys [x]
S2 MBAMScheduler;MBAMScheduler;c:\program files (x86)\Malwarebytes Anti-Malware\mbamscheduler.exe;c:\program files (x86)\Malwarebytes Anti-Malware\mbamscheduler.exe [x]
S2 MBAMService;MBAMService;c:\program files (x86)\Malwarebytes Anti-Malware\mbamservice.exe;c:\program files (x86)\Malwarebytes Anti-Malware\mbamservice.exe [x]
S3 MBAMProtector;MBAMProtector;c:\windows\system32\dr ivers\mbam.sys;c:\windows\SYSNATIVE\drivers\mbam.s ys [x]
S3 MBAMSwissArmy;MBAMSwissArmy;c:\windows\system32\dr ivers\MBAMSwissArmy.sys;c:\windows\SYSNATIVE\drive rs\MBAMSwissArmy.sys [x]
S3 MBAMWebAccessControl;MBAMWebAccessControl;c:\windo ws\system32\drivers\mwac.sys;c:\windows\SYSNATIVE\ drivers\mwac.sys [x]
S3 RTL8167;Driver Realtek 8167 NT;c:\windows\system32\DRIVERS\Rt64win7.sys;c:\win dows\SYSNATIVE\DRIVERS\Rt64win7.sys [x]
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--- Altri Servizi/Drivers In Memoria ---
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*NewlyCreated* - MBAMSWISSARMY
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--------- X64 Entries -----------
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------- Scansione supplementare -------
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uLocal Page = c:\windows\system32\blank.htm
mLocal Page = c:\windows\SysWOW64\blank.htm
IE: E&sporta in Microsoft Excel - c:\progra~2\MICROS~1\Office12\EXCEL.EXE/3000
TCP: DhcpNameServer = 192.168.1.1
FF - ProfilePath - c:\users\Fausta-Ermanno\AppData\Roaming\Mozilla\Firefox\Profiles\8 04r6okg.default\
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--------------------- CHIAVI DI REGISTRO BLOCCATE ---------------------
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[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\PC W\Security]
@Denied: (Full) (Everyone)
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Ora fine scansione: 2016-02-07 12:50:11
ComboFix-quarantined-files.txt 2016-02-07 11:50
ComboFix2.txt 2016-02-06 21:42
ComboFix3.txt 2016-02-06 21:22
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Pre-Run: 504.104.722.432 byte disponibili
Post-Run: 503.814.291.456 byte disponibili
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- - End Of File - - 6666568F39BFD6FF7920C867BE77C121
A36C5E4F47E84449FF07ED3517B43A31